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Chemistry

Chemistry
'Atomic theory' of matter was given by

Dalton
Pascal
Avogadro
Newton

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Chemistry
If water smells bad, then that odour can be removed by adding

Activated carbon
Deactivated nitrogen
Bleach
Alum

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Chemistry
The substance that is added to make natural rubber strong and more bouncy is

Polythene
Sponge
Sulphur
Chlorine

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Chemistry
Which of the following electrodes is used in strongly alkaline solution

Mercury - mercurous sulphate electrode
Mercury - mercurous chloride electrode
Silver - silver chloride electrode
Mercury - mercuric oxide electrode

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Chemistry
Tar roads get damaged if there is

Heavy traffic
No sloping
Stagnation of water on road
No maintenance

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Chemistry
Combustion of a candle is a/an

Exothermic reaction
Endothermic reaction
Photochemical reaction
Physical change

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